import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from "../components/Home.vue"
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights'
import Roles from '../components/power/Roles'
import Cate from '../components/goods/Cate'
import Params from '../components/goods/Params'
import List from '../components/goods/List'
import Add from '../components/goods/Add'
import Order from '../components/order/Order'
import Report from '../components/report/Report'

Vue.use(VueRouter)

const routes = [
  { path: "/", redirect: "/login" },
  { path: "/login", component: Login },
  {
    path: "/home",
    component: Home,
    redirect: "/welcome",
    children: [
      { path: "/welcome", component: Welcome },
      { path: "/users", component: Users },
      { path: "/rights", component: Rights },
      { path: "/roles", component: Roles },
      { path: "/categories", component: Cate },
      { path: "/params", component: Params },
      { path: "/goods", component: List },
      { path: "/goods/add", component: Add },
      { path: "/orders", component: Order },
      { path: "/reports", component: Report },
    ],
  },
];

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 从哪个路径跳转而来
  // next 是一个函数 表示放行
  // 如果用户访问的登录页面，直接放行
  if (to.path === "/login") return next();
  // 从 sessionStorage 中获取token值
  const tokenStr = window.sessionStorage.getItem("token");
  // 没有token，强制跳转到登录页面
  if (!tokenStr) return next("/login");
  next();
});

export default router
